Self-Organized Hexagonal Patterns of Independent Magnetic Nanodots


  • [**]We thank Professor Antonio Hernando and Professor Dominique Givord for fruitful discussions on the interpretation of the magnetic properties of the nanoparticles. This work has been financed by the European Union through the “NAMASOS” project, no. NMP2-CT-2003-505854. Work by the Spanish group has also been partially supported by Project FIS2004-01026. J.C. acknowledges support through a “Ramón y Cajal” contract from the Spanish Ministry of Science and Technology.


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A method for producing self-organised arrays of nanometric metallic dots is reported. It consists on developing first the nanodot pattern by ion erosion on a semiconductor cover film and transferring it to a previously buried metallic layer. This procedure has been applied to Co, and the ferromagnetic behaviour of the dots at room temperature is demonstrated.